How do I set a breakpoints at a symbol in dylib?

FROM : Hiroshi Saito
DATE : Tue Mar 29 13:02:09 2005

Hi,

For example;
Here is a application My.app which is made by foo.a and main.c
My.app loads A.dylib which is made by foo.a and bar.a, using two-level
name space.
I would like to break at a symbol of foo.a which is called by a symbol
of bar.a.
When I try to set a breakpoint of a symbol of foo.a, gdb set the
breakpoint at the symbol in the My.app.

How do I set a breakpoints at a symbol in A.dylib?
Is this a FAQ? I couldn't find via Google.

Thanks,
--
  Hiroshi Saito